[PATCH 4/4] kbuild: document KBUILD_LDS, KBUILD_VMLINUX_{INIT,MAIN} and LDFLAGS_vmlinux

[Sam Ravnborg <sam@ravnborg.org>]

From 27d836b236726aa5f472f3817df77e7076a2540d Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Sat, 28 Apr 2012 20:06:58 +0200
Subject: [PATCH 4/4] kbuild: document KBUILD_LDS, KBUILD_VMLINUX_{INIT,MAIN}
 and LDFLAGS_vmlinux

Newly exported variables - used by link-vmlinux.sh

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
 Documentation/kbuild/kbuild.txt |   19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt
index 68e32bb..1053642 100644
--- a/Documentation/kbuild/kbuild.txt
+++ b/Documentation/kbuild/kbuild.txt
@@ -50,6 +50,10 @@ LDFLAGS_MODULE
 --------------------------------------------------
 Additional options used for $(LD) when linking modules.
 
+LDFLAGS_vmlinux
+--------------------------------------------------
+Additional options passed to final link of vmlinux.
+
 KBUILD_VERBOSE
 --------------------------------------------------
 Set the kbuild verbosity. Can be assigned same values as "V=...".
@@ -214,3 +218,18 @@ KBUILD_BUILD_USER, KBUILD_BUILD_HOST
 These two variables allow to override the user@host string displayed during
 boot and in /proc/version. The default value is the output of the commands
 whoami and host, respectively.
+
+KBUILD_LDS
+--------------------------------------------------
+The linker script with full path. Assigned by the top-level Makefile.
+
+KBUILD_VMLINUX_INIT
+--------------------------------------------------
+All objects files for the init (first) part of vmlinux.
+Files specified with KBUILD_VMLINUX_INIT are linked first.
+
+KBUILD_VMLINUX_MAIN
+--------------------------------------------------
+All objects files for the main part of vmlinux.
+KBUILD_VMLINUX_INIT and KBUILD_VMLINUX_MAIN together specify
+all the object files used to link vmlinux.
-- 
1.7.10